If you need to see down the sides and towards the rear of your trailer, what mirror should you use?

If you need to see down the sides and towards the rear of your trailer, what mirror should you use?

• A. Convex mirrors.
• B. Plane (west coast) mirrors.
• C. Fender mirrors.
• D. Any of the above would work equally well.

Answer: (B)

Convex mirrors provide the widest field of view, which is essential for seeing along the sides and toward the rear of your trailer. The outwardly curved surface expands your angle of vision, helping you spot vehicles, debris, or hazards in the trailer’s blind spots as you drive or change lanes. Flat (plane) mirrors show a true-size image but cover a much narrower area, so they’re not as effective for monitoring the sides and rear. Fender mirrors are an older, narrower option that aren’t as reliable for tracking traffic around the trailer. So, for effectively seeing around and behind the trailer, the convex mirror is the best choice because it reduces blind spots and improves situational awareness.

Convex mirrors provide the widest field of view, which is essential for seeing along the sides and toward the rear of your trailer. The outwardly curved surface expands your angle of vision, helping you spot vehicles, debris, or hazards in the trailer’s blind spots as you drive or change lanes. Flat (plane) mirrors show a true-size image but cover a much narrower area, so they’re not as effective for monitoring the sides and rear. Fender mirrors are an older, narrower option that aren’t as reliable for tracking traffic around the trailer. So, for effectively seeing around and behind the trailer, the convex mirror is the best choice because it reduces blind spots and improves situational awareness.